The Browallia is an annual flower that blooms heavily from early spring to autumn frost and year-round as sunny window flowers or in greenhouses. Amethyst flowers, or browallia speciosa, grow well in warmer climates and need to be reseeded every year after dying in the winter. They make very pretty bedding plants. Browallia grow best in cool or coastal gardens, but with partial shade or an eastern exposure, it will grow well elsewhere. Speciosa varieties grow in a loose mound up to 18 inches high and 18 inches wide.
Browallia speciosa, grow well in warmer climates and need to be reseeded every year after dying in the winter.
How to grow:
- Plant in rich, well-drained soil but keep moist.
- Plant large varieties ten inches apart and dwarf ones six inches apart.
- Browallia is a good shade plant, though with a looser habit and sparser flowers.
- Start seeds indoors six to eight weeks prior to planting out after the last frost.
- At temperatures of 70 degrees to 75 degrees Fahrenheit, they’ll take 14 to 21 days to germinate.
- The sapphire-blue flowers are grown in beds, borders, or rock gardens.
- Compact plants make good edges for a tall border and are excellent container plants.
This video tells you more about growing Browallia species such as Bush Violet, Sapphire flower, Amethyst flower, and Jamaican forget-me-not in your garden.